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/*
 * Copyright (C) 2015 SoftIndex LLC.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.datakernel.asm;

import java.util.HashMap;
import java.util.Map;

/**
 * Represents a loader for defining dynamically generated classes.
 * Also contains cache, that speeds up loading of classes, which have the same structure as the ones already loaded.
 */
public class DefiningClassLoader extends ClassLoader {
	private final Map> definedClasses = new HashMap<>();

	public DefiningClassLoader() {
	}

	public DefiningClassLoader(ClassLoader parent) {
		super(parent);
	}

	public Class defineClass(String name, byte[] b) {
		return defineClass(name, b, 0, b.length);
	}

	public void addToCache(Object key, Class definedClass) {
		definedClasses.put(key, definedClass);
	}

	public Class getClassByKey(Object key) {
		return definedClasses.get(key);
	}

}